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@burglekitt/gmt

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Temporal-based date and time utilities with timezone support and polyfill integration

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import { Temporal } from "@js-temporal/polyfill"; import { isValidDateTime } from "../validate/index.js"; /** * Return the microsecond (0-999) for a given ISO 8601 datetime string. * * - Returns zero-padded string for microsecond. * - Returns "" for invalid input. * * @param value ISO datetime string * @returns Microsecond (000-999) or "" on invalid input * * @example parseMicrosecondFromDateTime("2024-03-15T14:30:45.123") // "123" * @example parseMicrosecondFromDateTime("2024-03-15T14:30:45.000") // "000" * @example parseMicrosecondFromDateTime("invalid") // "" */ export function parseMicrosecondFromDateTime(value) { if (!isValidDateTime(value)) return ""; try { const dateTime = Temporal.PlainDateTime.from(value); return dateTime.microsecond.toString().padStart(3, "0"); } catch { return ""; } }